我有一个 4x4 矩阵 ( test4x4),我想将它插值到一个 8x8 矩阵 ( test8x8)。我用于interpolate.interp2d插值,但是当我绘制它(test8x8)时,它看起来不像是test4x4绘图。我哪里弄错了?
import numpy as np
from scipy import interpolate
import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import Axes3D
mymin,mymax = 0,3
X = np.linspace(mymin,mymax,4)
Y = np.linspace(mymin,mymax,4)
x,y = np.meshgrid(X,Y)
test4x4 = np.array([[ 1.2514318 , 1.25145821, 1.25148472, 1.25151133],
[ 1.25087456, 1.25090105, 1.25092764, 1.25095435],
[ 1.25031581, 1.25034238, 1.25036907, 1.25039586],
[ 1.24975557, 1.24978222, 1.24980898, 1.24983587]])
f = interpolate.interp2d(x,y,test4x4,kind='cubic')
# use linspace so your new range also goes from 0 to 3, with 8 intervals
Xnew = np.linspace(mymin,mymax,8)
Ynew = np.linspace(mymin,mymax,8)
test8x8 = f(Xnew,Ynew)
print('test8x8=',test8x8)
plot1=plt.figure(1)
plt.title('test 4X4')
fig1 = plt.figure(1)
ax1 = fig1.gca(projection='3d')
ax1.plot_surface(x.T,y.T, test4x4, alpha = 1, rstride=1, cstride=1, linewidth=0.5, antialiased=True, zorder = 0.5)
plt.xlabel('x')
plt.ylabel('y')
plt.grid()
ax1.plot_surface(Xnew.T, Ynew.T, test8x8, alpha = 1, rstride=1, cstride=1, linewidth=0.5, antialiased=True, zorder = 0.5)
plt.grid()
plt.show()
我想我可以解决这个问题,我应该使用x1,y1 = np.meshgrid(Xnew,Ynew)
.
慕斯王
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